JPS6346401B2 - - Google Patents

Info

Publication number
JPS6346401B2
JPS6346401B2 JP18302580A JP18302580A JPS6346401B2 JP S6346401 B2 JPS6346401 B2 JP S6346401B2 JP 18302580 A JP18302580 A JP 18302580A JP 18302580 A JP18302580 A JP 18302580A JP S6346401 B2 JPS6346401 B2 JP S6346401B2
Authority
JP
Japan
Prior art keywords
signal
circuit
focus detection
absolute value
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP18302580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57105711A (en
Inventor
Hiroshi Kurokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP18302580A priority Critical patent/JPS57105711A/ja
Priority to DE19813142133 priority patent/DE3142133A1/de
Publication of JPS57105711A publication Critical patent/JPS57105711A/ja
Publication of JPS6346401B2 publication Critical patent/JPS6346401B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Lens Barrels (AREA)
  • Automatic Focus Adjustment (AREA)
JP18302580A 1980-10-23 1980-12-24 Lens motor driving circuit of auto focus camera Granted JPS57105711A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18302580A JPS57105711A (en) 1980-12-24 1980-12-24 Lens motor driving circuit of auto focus camera
DE19813142133 DE3142133A1 (de) 1980-10-23 1981-10-23 Automatisches fokussiersystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18302580A JPS57105711A (en) 1980-12-24 1980-12-24 Lens motor driving circuit of auto focus camera

Publications (2)

Publication Number Publication Date
JPS57105711A JPS57105711A (en) 1982-07-01
JPS6346401B2 true JPS6346401B2 (Direct) 1988-09-14

Family

ID=16128417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18302580A Granted JPS57105711A (en) 1980-10-23 1980-12-24 Lens motor driving circuit of auto focus camera

Country Status (1)

Country Link
JP (1) JPS57105711A (Direct)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04114502U (ja) * 1991-03-20 1992-10-08 株式会社千葉港商事 サイズ調節機構付きシヤツ

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067912A (ja) * 1983-09-24 1985-04-18 Canon Inc ズ−ムレンズ装置
JP2606123B2 (ja) * 1994-01-26 1997-04-30 株式会社ニコン 撮影レンズの位置制御装置
JP2008087383A (ja) * 2006-10-03 2008-04-17 Nikko Co Ltd 可搬式ミキサー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04114502U (ja) * 1991-03-20 1992-10-08 株式会社千葉港商事 サイズ調節機構付きシヤツ

Also Published As

Publication number Publication date
JPS57105711A (en) 1982-07-01

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